47 lines
1.9 KiB
JavaScript
47 lines
1.9 KiB
JavaScript
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import { Observable } from '../Observable';
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import { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';
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import { innerFrom } from './innerFrom';
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import { popResultSelector } from '../util/args';
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import { createOperatorSubscriber } from '../operators/OperatorSubscriber';
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import { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';
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import { createObject } from '../util/createObject';
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export function forkJoin() {
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var args = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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args[_i] = arguments[_i];
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}
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var resultSelector = popResultSelector(args);
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var _a = argsArgArrayOrObject(args), sources = _a.args, keys = _a.keys;
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var result = new Observable(function (subscriber) {
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var length = sources.length;
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if (!length) {
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subscriber.complete();
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return;
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}
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var values = new Array(length);
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var remainingCompletions = length;
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var remainingEmissions = length;
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var _loop_1 = function (sourceIndex) {
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var hasValue = false;
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innerFrom(sources[sourceIndex]).subscribe(createOperatorSubscriber(subscriber, function (value) {
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if (!hasValue) {
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hasValue = true;
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remainingEmissions--;
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}
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values[sourceIndex] = value;
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}, function () { return remainingCompletions--; }, undefined, function () {
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if (!remainingCompletions || !hasValue) {
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if (!remainingEmissions) {
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subscriber.next(keys ? createObject(keys, values) : values);
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}
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subscriber.complete();
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}
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}));
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};
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for (var sourceIndex = 0; sourceIndex < length; sourceIndex++) {
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_loop_1(sourceIndex);
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}
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});
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return resultSelector ? result.pipe(mapOneOrManyArgs(resultSelector)) : result;
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}
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//# sourceMappingURL=forkJoin.js.map
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